there was an error while installing the application

By default, IIS serves only static content - meaning features like ASP, ASP.NET, server-side includes, WebDAV publishing, FrontPage ? Server Extensions, and Common Gateway Interfaces - do not work unless enabled. In order to take a more proactive stance against malicious users and attackers, IIS is installed in a highly secure and locked mode. Requests for Dynamic Content Return 404 Error This alternative, however, still presents a security risk because the TCB permission is very powerful.įor more information, see Configuring Worker Process Identities and IIS and Built-in Accounts in the Help that comes with IIS Manager. As an alternative, and if your application needs permission to use the Trusted Computing Base (TCB), run the application as a configurable identity and assign the TCB permission to the configurable identity. If it is absolutely necessary to use the LocalSystem account on an application, run that application in a new application pool in its own virtual directory so you can reduce the attack surface by isolating the application. You should avoid using the LocalSystem account when possible. The LocalSystem account has access to almost all resources on the operating system, and therefore creates serious security implications. If you migrate applications to IIS 6.0 while the server is in worker process isolation mode, and if your applications previously ran in-process (in Inetinfo.exe) as LocalSystem, the applications may fail to access resources because of the restrictions set forth by the Network Service identity.

Network Service is an account with few user rights and therefore provides better security by restricting access to resources on the Web server. Applications running in this mode use the Network Service identity, by default. ISAPI filter does not show up as 'loaded' in UIĪpplications Are Denied Access to ResourcesĪfter a clean install, IIS 6.0 runs in worker process isolation mode. asp files)ĪSP generates Permission Denied errors in event log for global.asaĪSP.NET pages are returned as static filesĬollaboration Data Objects for Windows NT Server failĪnonymous accounts (IUSR_ computername) attempting sub-authentication logon receive 401 errorĪccess denied to console applications in System32 directoryįile requests to UNIX or Linux server return wrong file or errorĬannot locate /Scripts or /Msadc directory Server-side include directives (#include) return 404 error (for. Worker process recycling drops application session state Requests for static files return 404 error Requests for dynamic content return 404 error Many of the design changes in Internet Information Services (IIS) 6.0 directly address the need to secure the World Wide Web Publishing Service (This topic describes some of the symptoms of these errors and the processes to remedy them (or a link to a topic that describes how to remedy the error).Īpplications are denied access to resources

There was an error while installing the application